Parametric Cotton Reel

by tubular, published

Parametric Cotton Reel by tubular Aug 23, 2012
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1843Views 682Downloads Found in 3D Printer Accessories


A parametric Cotton Reel constructed by mating two identical halves.

The halves make it easy to retrofit to reprap rods without any disassembly (for a simple filament spool holder).

Also great for cable grommits, eg for closing up a hole in an enclosure or wall after you pass a terminated monitor cable through.


  1. Adjust the two heights and three diameters at the top of the SCAD file.
  2. Print two identical half cotton reels
  3. Mate the two halves together (easier while still warm off the printer). The 3D printer layers help it to all lock nicely.
  4. If they are too hard to mate, increase the "S" shim value

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